Airbus A380 upgrade waits in the wings at Paris Airshow

PARIS (Reuters) - Airbus is preparing to roll out a novel A380 wingtip design to rally support for the world's largest passenger jet by improving its fuel efficiency, according to a prototype seen on Saturday.

PARIS (Reuters) - Airbus is preparing to roll out a novel A380 wingtip design to rally support for the world's largest passenger jet by improving its fuel efficiency, according to a prototype seen on Saturday.